Device for measuring stress of hobbing cutter

The device with internal sensors and a PLC module in the cutter head box addresses sensor vulnerability by protecting them from damage, enabling accurate and efficient long-term force monitoring of roller cutters.

CN119245899APending Publication Date: 2025-01-03SHANGHAI TUNNEL ENG CO LTD +1
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Patent Information

Application Number
CN202411502396.X
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-25
Publication Date
2025-01-03

AI Technical Summary

Technical Problem

Conventional sensors for measuring the force of a roller cutter are installed on the surface of the cutter head box, making them vulnerable to damage in harsh working environments and unsuitable for long-term monitoring.

Method used

A device with sensors installed inside the cutter head box, protected by a measuring body, which includes a placement groove for the hob bearing, multiple sensors contacting the bearing at different positions, and a PLC module for real-time data collection, ensuring the sensors are shielded from damage and interference.

Benefits of technology

The solution protects the sensors from damage, enabling accurate and long-term monitoring of force data by shielding them from harsh conditions and external interference, enhancing data accuracy and reducing time costs.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention relates to a device for measuring the stress of a hob, and relates to the technical field of shield cutter measurement, the device is mounted in a cutterhead box for mounting the hob, the device comprises a measuring main body mounted in the inner wall of the cutterhead box, the measuring main body is provided with a placing groove for placing a bearing of the hob, and the bearing of the hob is placed in the placing groove. The first sensor is installed in the inner wall of the groove wall face of the containing groove of the measuring body, the first sensor makes contact with the corresponding portion of a bearing of the hobbing cutter, the sensor is placed in the measuring body, the sensor can be protected and prevented from being damaged in the severe working environment, long-term monitoring is better facilitated, and the service life of the hobbing cutter is prolonged. During measurement, the hobbing cutter is used for driving the bearing to rotate in the measurement main body, so that the bearing extrudes and impacts the first sensor and the second sensor to obtain the impact stress force, and the stress is monitored by the plc module.
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Description

Technical Field

[0001] The invention relates to the field of shield cutter measurement, in particular to a device for measuring the force of a roller cutter. Background Art

[0002] The roller cutter is an important part of the shield machine, which is mainly used to break rocks by rotating and pushing during tunnel excavation. Under the action of the thrust of the shield machine, the roller cutter presses the rock surface tightly, and as the cutter head rotates, the roller cutter breaks the rock. In the process of crushing the rock and soil, the roller cutter is placed inside the cutter head box, and a sensor needs to be installed to detect the force on the roller cutter. However, conventional sensors in the prior art are installed on the surface of the cutter head box, which is easily damaged in the working environment and cannot be protected, which is not conducive to long-term monitoring. Therefore, it is necessary to provide measures to solve the problem that the sensor cannot be protected during use, which is not conducive to long-term monitoring. Summary of the invention

[0003] The purpose of the present invention is to overcome the defects of the prior art and provide a device for measuring the force of a roller cutter to solve the problem that the existing sensor cannot be protected during use, which is not conducive to long-term monitoring.

[0004] The technical solution to achieve the above object is: a device for measuring the force of a hob, which is installed in a cutter head box where the hob is installed, and the device comprises:

[0005] A measuring body installed in the inner wall of the cutter head box, wherein a placement groove for placing the bearing of the hob is provided on the measuring body;

[0006] A first sensor installed in the inner wall of the placement groove of the measuring body, wherein the first sensor contacts a corresponding part of the bearing of the hob;

[0007] A second sensor is installed in the inner wall of the groove wall surface of the placement groove of the measuring body, the installation position of the second sensor is different from the installation position of the first sensor, and the second sensor contacts the corresponding part of the bearing of the hob.

[0008] The technical solution of the present invention is further improved in that: the first sensor is arranged on one side of the bearing of the hob and contacts the side of the bearing of the hob.

[0009] The technical solution of the present invention is further improved in that: the second sensor is arranged at the bottom of the bearing of the hob and contacts the bottom of the bearing of the hob.

[0010] The technical solution of the present invention is further improved in that it also includes a plc module arranged on the measuring body, and the plc module is connected to the first sensor and the second sensor.

[0011] The technical solution of the present invention is further improved in that: a fixing hole for installation is provided on one side of the measuring body.

[0012] The technical solution of the present invention is further improved in that: the measuring body is a shell with an installation space formed inside, and the placement groove is formed on one side of the shell;

[0013] The first sensor and the second sensor are both partially disposed in the installation space of the housing;

[0014] Portions of the housing corresponding to the first sensor and the second sensor are provided with corresponding openings.

[0015] The technical solution of the present invention is further improved in that: a pair of connecting members are provided at the bottom of the measuring body, and the connecting members support and connect the second sensor.

[0016] The technical solution of the present invention is further improved in that: the length of the connecting piece is greater than the length of the second sensor.

[0017] The technical solution of the present invention is further improved in that: the PLC module has a port for connecting a signal line, and the port is arranged at the bottom of the measuring body.

[0018] A further improvement of the technical solution of the present invention is that the outer contour of the measuring body is C-shaped.

[0019] By using the above technical solution, the present invention has the following technical effects compared with the prior art:

[0020] The present invention provides a device for measuring the force of a roller cutter. By placing a sensor in a measuring body, the sensor can be protected to avoid damage to the sensor in a harsh working environment, which is more conducive to long-term monitoring. During measurement, the roller cutter is used to drive the bearing to rotate in the measuring body, so that the bearing squeezes and impacts the first sensor and the second sensor to obtain the intensity of the impact force, and then the PLC module monitors the force.

[0021] By setting the measuring body to a C shape, it is more conducive to fitting the hob bearing, so that the hob bearing is confined in the C-shaped groove, and the bearing is driven to rotate by the hob, and the sensor is hit by the bearing movement, thereby obtaining the extrusion force, making the collected force size more accurate, and using the PLC module to connect with the signal line for transmission, real-time dynamic data collection can be achieved without external interference, making the data more accurate, and the work content can be changed in time to reduce time costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention is a cross-sectional view of a device for measuring the force of a roller cutter.

[0023] Figure 2 The present invention is a bottom view of a device for measuring the force of a roller cutter.

[0024] Figure 3 The present invention is a schematic diagram of the connection between a measuring body of a device for measuring the force of a hob and a hob.

[0025] Figure 4 The present invention is a schematic diagram of the connection between a measuring body and a cutter head box of a device for measuring the force of a roller cutter.

[0026] In the figure: 1. measuring body; 2. first sensor; 3. second sensor; 4. transmission line; 5. fixing hole; 6. cutter head box; 7. hob; 8. connecting piece. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0028] The present invention provides a device for measuring the force of a hob. The device can protect the sensor by arranging the sensor inside the main body. According to the vibration characteristics of the hob, the C-shaped block fits the hob, and the PLC module and signal line are used for transmission to dynamically collect data in real time without external interference, and the data has the advantages of more accurate data. The device for measuring the force of a hob is described below.

[0029] See also Figure 1 , showing a cross-sectional view of a device for measuring the force of a hob cutter according to the present invention. Figure 2 , showing a bottom view of a device for measuring the force of a hob cutter according to the present invention. Figure 3 , showing a schematic diagram of the connection between a measuring body and a hob in a device for measuring the force of a hob according to the present invention. Figure 4 , shows a schematic diagram of the connection between the measuring body and the cutter head box of a device for measuring the force of a hob cutter according to the present invention. Figures 1 to 4 , the structure of the device for measuring the force of the hob cutter of the present invention is explained.

[0030] See also Figures 1 to 4The present invention provides a device for measuring the force of a roller cutter, which is installed in a cutter head box on which the roller cutter is installed. The device comprises: a measuring body 1, a first sensor 2, and a second sensor 3. The measuring body 1 is installed in the inner wall of the cutter head box 6. The measuring body 1 is provided with a placement groove for placing the bearing of the roller cutter 7. The first sensor 2 is installed in the inner wall of the placement groove of the measuring body 1 at the groove wall surface. The first sensor 2 contacts the corresponding part of the bearing of the roller cutter 7. The second sensor 3 is installed in the inner wall of the placement groove of the measuring body 1 at the groove wall surface. The installation position of the second sensor 3 is different from the installation position of the first sensor 2. The second sensor 3 is in contact with the corresponding part of the bearing of the hob 7. When the hob 7 rotates, the bearing is driven to squeeze the second sensor 3. When the hob 7 is displaced, the bearing is driven to hit the first sensor 2 to squeeze the first sensor 2. First, the first sensor 2 and the second sensor 3 are installed in the measuring body 1 to protect the sensors and avoid damage to the sensors. The measuring body 1 is placed in the cutter box 6, and the wires connecting the measuring body 1 can be arranged in the cutter box 6 to protect the wires, which is more conducive to long-term monitoring.

[0031] Furthermore, the positions of the bearings at both ends of the hob 7 can be limited by the provided C-shaped grooves, and the C-shape fits the bearings of the hob 7 more closely, so that the bearings can hit the first sensor 2 and the second sensor 3 when rotating.

[0032] In a specific embodiment of the present invention, the first sensor 2 is disposed on one side of the bearing of the roller cutter 7 and contacts the side portion of the bearing of the roller cutter 7 .

[0033] In a specific implementation of the present invention, the second sensor 3 is disposed at the bottom of the bearing of the roller cutter 7 and contacts the bottom of the bearing of the roller cutter 7 .

[0034] Preferably, the first sensor 2 and the second sensor 3 are in contact with corresponding parts of the bearing of the hob 7, so that the bearing on the hob 7 can accurately hit the sensor when rotating to measure the force.

[0035] In a specific embodiment of the present invention, it also includes a PLC module 4 arranged on the measuring body 1, and the PLC module 4 is connected to the first sensor 2 and the second sensor 3.

[0036] Preferably, the PLC module 4 can be used to transmit data to the first sensor 2 and the second sensor 3, so as to achieve real-time dynamic data collection without external interference, making the data more accurate.

[0037] In a specific embodiment of the present invention, a fixing hole 5 for installation is provided on one side of the measuring body 1 .

[0038] Furthermore, the measuring body 1 is fixed on the cutter head box 6 by screwing the bolts into the fixing holes 5 and then fixing the bolts screwed into the fixing holes 5 into corresponding threaded holes on the cutter head box 6 .

[0039] Furthermore, by providing the fixing holes 5, the structural connection can be made more stable, the stability can be improved, and the precision can be higher.

[0040] In a specific embodiment of the present invention, the measuring body 1 is a shell with an installation space formed inside, a placement groove is formed on one side of the shell, the first sensor 2 and the second sensor 3 are partially placed in the installation space of the shell, and corresponding openings are provided on the parts of the shell corresponding to the first sensor 2 and the second sensor 3.

[0041] Furthermore, by providing openings corresponding to parts of the first sensor 2 and the second sensor 3 , the first sensor 2 and the second sensor 3 can be exposed from the corresponding openings, so that the bearing on the roller cutter 7 can hit the exposed parts of the first sensor 2 and the second sensor 3 .

[0042] In a specific embodiment of the present invention, a pair of connecting members 8 are provided at the bottom of the measuring body 1 , and the connecting members 8 support and connect the second sensor 3 .

[0043] Furthermore, the connecting piece 8 can make the second sensor 3 more compact after installation and less likely to come off.

[0044] In a specific embodiment of the present invention, the length of the connecting member 8 is greater than the length of the second sensor 3 .

[0045] Furthermore, since the length of the connecting member 8 is greater than the length of the second sensor 3 , the second sensor 3 has a larger placement area.

[0046] In a specific embodiment of the present invention, the PLC module 4 has a port for connecting a signal line, and the port is arranged at the bottom of the measuring body 1 .

[0047] Furthermore, by setting a port on the PLC module 4, real-time data collection can be achieved.

[0048] In a specific embodiment of the present invention, the outer contour of the measuring body 1 is C-shaped.

[0049] Furthermore, by setting the measuring body 1 in a C-shape, the bearing of the hob 7 can be better placed.

[0050] like Figures 1 to 3 As shown, the installation process of a device for measuring the force of a hob cutter of the present invention is described below.

[0051] First, provide a first sensor 2 and a second sensor 3 and a measuring body 1 with a bearing for placing a hob 7, install the first sensor 2 and the second sensor 3 in the measuring body 1, then install the plc module 4 in the measuring body 1, and then place the measuring body 1 in a cutter box 6, screw the bolts in the fixing holes 5 to fix the measuring body 1 on the cutter box 6, then arrange the wires connected to the plc module 4 in the cutter box 6, and then place the cutter 7 in the C-shaped groove of the measuring body 1 in the cutter box 6. After installation, operate it, and drive the bearing to rotate through the cutter 7, so that the bearing is squeezed on the second sensor 3, so that the second sensor 3 is subjected to force. When the cutter 7 shakes and displaces, the bearing hits the first sensor 2, so that the first sensor 2 is subjected to force. During the force application process of the first sensor 2 and the second sensor 3, the plc module 4 is used to detect the force, so as to obtain force data.

[0052] The beneficial effects of the device for measuring the force of a hob cutter of the present invention are as follows:

[0053] 1. By placing the sensor in the measuring body, the sensor can be protected to avoid damage in harsh working environments, which is more conducive to long-term monitoring.

[0054] 2. By setting the measuring body to a C shape, it is more conducive to fitting the hob, and the force size can be collected more accurately. By connecting the PLC module with the signal line for transmission, real-time dynamic data collection can be achieved without external interference, making the data more accurate, and the work content can be changed in time to reduce time costs.

[0055] The present invention is described in detail above in conjunction with the embodiments of the accompanying drawings. A person skilled in the art can make various variations of the present invention according to the above description. Therefore, certain details in the embodiments should not constitute a limitation of the present invention, and the scope of protection of the present invention shall be defined by the scope of the attached claims.

Claims

1. A device for measuring the force of a roller cutter, installed in a cutter head box where the roller cutter is installed, characterized in that: The device comprises: A measuring body (1) installed in the inner wall of the cutter head box (6), wherein the measuring body (1) is provided with a placement groove for placing a bearing of a roller cutter (7); A first sensor (2) installed in the inner wall of the placement groove of the measuring body (1), wherein the first sensor (2) contacts a corresponding part of the bearing of the roller cutter (7); A second sensor (3) is installed in the inner wall of the groove wall surface of the placement groove of the measuring body (1), the installation position of the second sensor (3) is different from the installation position of the first sensor (2), and the second sensor (3) is in contact with the corresponding part of the bearing of the roller (7).

2. The device for measuring the force of a hob according to claim 1, characterized in that: The first sensor (2) is arranged on one side of the bearing of the roller cutter (7) and is in contact with the side portion of the bearing of the roller cutter (7).

3. The device for measuring the force of a hob according to claim 1, characterized in that: The second sensor (3) is arranged at the bottom of the bearing of the roller cutter (7) and is in contact with the bottom of the bearing of the roller cutter (7).

4. The device for measuring the force of a hob according to claim 1, characterized in that: It also comprises a PLC module (4) arranged on the measuring body (1), and the PLC module (4) is connected to the first sensor (2) and the second sensor (3).

5. The device for measuring the force of a hob according to claim 1, characterized in that: A fixing hole (5) for installation is provided on one side of the measuring body (1).

6. The device for measuring the force of a hob according to claim 1, characterized in that: The measuring body (1) is a shell with an installation space formed inside, and the placement groove is formed on one side of the shell; The first sensor (2) and the second sensor (3) are both partially disposed in the installation space of the housing; Portions of the housing corresponding to the first sensor (2) and the second sensor (3) are provided with corresponding openings.

7. The device for measuring the force of a roller cutter according to claim 1, characterized in that: A pair of connecting members (8) are provided at the bottom of the measuring body (1), and the connecting members (8) are supported and connected to the second sensor (3).

8. The device for measuring the force of a hob according to claim 7, characterized in that: The length of the connecting piece (8) is greater than the length of the second sensor (3).

9. The device for measuring the force of a hob according to claim 1, characterized in that: The PLC module (4) has a port for connecting a signal line, and the port is arranged at the bottom of the measuring body (1).

10. The device for measuring the force of a hob according to claim 1, characterized in that: The outer contour of the measuring body (1) is C-shaped.